Abstract
In the progressive freeze-concentration, limiting partition coefficient, K0, is a very important process parameter, which corresponds to the partition coefficient of a solute between the ice and liquid phase assuming the infinitesimal ice growth rate and/or the infinite mass-transfer rate at the ice-liquid interface. K0 was determined for glucose and various electrolytes in the single-component and multi-component systems. K0 was dependent both on the concentration and the type of solute. In the single-component system, osmotic pressure was proved to be the major determinant of K0. In the multi-component system, K0 for a solute was affected by the coexisting solute through the osmotic pressure of the total system. K0 was also dependent on viscosity when the change in the osmotic pressure was limited but the change in the viscosity was considerable because of the coexisting solute.
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